Land Rover Body And Paint Air Bag And Safety Belt Rover Manual

the ATCM also automatically sets the air source to
recirculated air, blower speed to maximum and
distribution to face. When maximum hot is selected,
the ATCM also automatically sets the air source to
fresh air, blower speed to maximum and distribution
to footwell.
•LH and RH Seat Heater Switches: Activates the
heater elements in the seat cushion and seat back at
one of two heat levels. The first press of the switch
energizes the heater elements at the higher heat
setting and illuminates two LED in the...

•Economy Switch: Reduces the A/C compressor
output to a minimum displacement condition x 5%,
reducing the engine load required to operate the A/C
compressor. An amber LED in the switch is
illuminated when the economy mode is selected on.
•Recirculation Switch: For selection of fresh or
recirculated air. On models without pollution sensing,
an amber LED in the switch is illuminated when
recirculated air is selected. On models with pollution
sensing, the recirculation switch incorporates two
amber LED. The...

ATCM Harness Connector C1629 Pin Details
Input/OutputSystemDescriptionPin No.
AutomaticManual
OutputYesYesSensor 5V reference voltage (refri-
gerant pressure, humidity, sunlight as
applicable)
1
InputYesNoPollution sensor NOx signal2
Input/OutputYesNoIn-vehicle temperature sensor signal3
InputYesYesRefrigerant pressure sensor signal4
InputYesNoSunlight sensor RH signal5
OutputYesNoPollution sensor PWM signal6
OutputYesYesBlower relay coil7
---Not used8
Input/OutputYesYesMedium speed CAN bus low9...

Input/OutputSystemDescriptionPin No.
AutomaticManual
Input/OutputYesYesMedium speed CAN bus high22
InputYesYesCompressor solenoid valve -23
OutputYesYesCompressor solenoid valve +24
ATCM Harness Connector C1630 Pin Details
Input/OutputSystemDescriptionPin No.
AutomaticManual
---Not used1 and 2
Input/OutputYesYesRecirculation motor power feed/
ground
3
Input/OutputYesYesRecirculation motor power feed/
ground
4
---Not used5 to 8
InputYesYesRecirculation door motor feedback
potentiometer signal
9
---Not...

Input/OutputSystemDescriptionPin No.
AutomaticManual
InputYesYesEvaporator temperature sensor signal20
---Not used21 to 23
InputYesYesRecirculation door motor ground24
ATCM Harness Connector C2295 Pin Details
Input/OutputSystemDescriptionPin No.
AutomaticManual
InputYesYesSeat heater power supply, right1
InputYesYesSeat heater power supply, left2
OutputYesYesPower supply to right front seat
heaters
3
InputYesYesRight front seat temperature sensor4
InputYesYesLeft front seat temperature sensor5...

AMBIENT AIR TEMPERATURE
SENSOR
The ambient temperature sensor is a Negative
Temperature Coefficient (NTC) thermistor that provides
the ATCM with an input of external air temperature.
The sensor is attached to a bracket on the rear of the
bumper beam, on the vehicle center-line.
REFRIGERANT PRESSURE SENSOR
The refrigerant pressure sensor provides the ATCM
with a pressure input from the high pressure side of the
refrigerant system. The refrigerant pressure sensor is
located in the refrigerant line between...

The ATCM uses the input from the evaporator
temperature sensor to control the load of the A/C
compressor and thus the operating temperature of the
evaporator.
IN-VEHICLE TEMPERATURE
SENSOR
The in-vehicle temperature sensor is a NTC thermistor
installed behind a grill on the driver side of the center
console finisher. The sensor is connected to a tube, the
other end of which is connected to a venturi on the side
casing of the heater. An air bleed from the heater,
through the venturi, induces a flow of air...

The pollution sensor allows the ATCM to monitor the
ambient air for the level of hydrocarbons and oxidized
gases such as nitrous oxides, sulphur oxides and carbon
monoxide. The sensor is attached to a bracket on the
front-end carrier, at the top left corner of the condenser.
The pollution sensor is powered by a battery voltage
feed from the ATCM, and returns separate signals of
hydrocarbon and oxidized gases.
If there is a fault with the pollution sensor, the ATCM
disables the automatic operation of the...

A/C compressor torque value, the ECM is able to reduce
the load on the engine when it needs to maintain vehicle
performance or cooling system integrity.
Idle Speed Control
In order to maintain A/C cooling performance, the
ATCM requests an increase in engine idle speed if the
evaporator temperature starts to rise while the refrigerant
solenoid valve is already set to the maximum flow rate.
The increase in engine idle speed is requested in three
stages, using a medium speed CAN bus message to the
Engine...

15151515>10 (>50)
15151515>5 to 41 to 0 to 32 to -10 to 14 to